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Earth's Changing Atmosphere

Human activity is changing the composition of our atmosphere; ESA's Climate Change Initiative (CCI) uses satellite data, going back nearly three decades, to help improve our understanding of how our atmosphere's composition is changing and how these changes are affecting our climate. 

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8th Collocation Meeting 2018

8th Collocation Meeting

The 8th CCI Collocation meeting took place at St Hugh's College, Oxford, UK, from the 20-22 March 2018. This was the first meeting of the CCI programme with both the current and new ECV projects. There was also representation from cross-ECV activities including CMUG, Sea Level Budget, Knowledge Exchange and the Fellowships.

A report of the meeting is available here.

Earth's Changing Lands

Land cover maps provide us with a break down of the different materials that occupy the Earth's surface (e.g. ice, crops, forests, grasslands and artificial materials); this infomation is important to monitoring changes in land use, conserving biodiversity, managing natural resources and understanding climate change. 

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In April 2017, the CCI Land Cover team released the first time-series of annual global maps spanning 1992–2015. For more information and data download, please visit the CCI Land Cover web page. 

The Interaction Between the Earth's Oceans and Atmosphere

This animation provides a brief introduction on how the Earth’s oceans and atmosphere interact and how this interaction plays a vital role in moderating the Earth's climate.

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CCI Soil Moisture Dataset Release (Soil Moisture v03.3)

The Soil Moisture CCI team is pleased to announce the release of their latest dataset, CCI Soil Moisture v03.3, which incorporates an extension to the global time-series (up to December 2016, nearly four decades in total) of soil moisture satellite data provided by the previously released CCI Soil Moisture v03.2 dataset.

For more information and data, please visit the CCI page for Soil Moisture

The Recovery of the Earth’s Ozone Layer

The reward for continuous international efforts to reduce atmospheric concentrations of ozone-depleting substances (e.g. chlorofluorocarbons (CFCs)) is beginning to materialise - climate scientists, using three decades of ozone measurements (from multiple instruments/satellites, harmonised under ESA’s Climate Change Initiative (CCI) Ozone project), are now seeing a trend indicative of the global recovery of the Earth’s ozone layer. The ozone layer, which resides in the Stratosphere, protects life on the Earth’s surface from harmful exposures to ultraviolet (UV) radiation from the Sun and so its presence and preservation is important.

For more information, please see the ESA news item or visit the CCI page for Ozone.

GCOS: Open Review of the Current Requirements for ECVs

The Global Climate Observing System (GCOS) is launching an open review of the current requirements for Essential Climate Variables (ECVs) and would like to invite a wide range of reviewers to participate.

The open review will be the first step for a revision and update of the requirements planned for 2021/2. Revisions to the existing ECV and ECV products, or proposals for new ECV or ECV products, can be made and, support for the existing requirements is also encouraged. Comments should be submitted by the end of 2017 using the online form at

Snow Maps Reveal Shifts in Springtime Carbon Dioxide Uptake

Daily snow cover maps of the northern hemisphere show that spring plant growth has shifted 8 days earlier on average, over 36 years. As a result of rising global temperatures, the melting of seasonal snow cover is happening earlier in spring. However, the response of the surrounding boreal forests has been to increase their uptake of carbon dioxide from the atmosphere through photosynthetic activity.

CCI Sea Ice Dataset Release (Sea Ice Concentration v2.1)

The Sea Ice CCI team is pleased to announce the release of their latest dataset, Sea Ice Concentration v2.1, which incorporates an extension to the time-series (up to May 2017) provided by the previously released Sea Ice Concentration v2.0 dataset.

For more information, please visit the CCI page for Sea Ice or the CEDA catalogue entry.

CCI Toolbox v1.0 now available

CCI Toolbox v1.0 now available.

The CCI Toolbox team would like to invite you to install the new release of their software, download some data and try out the latest display features and operations.  

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